[ShadowAce]

They couldn't foresee the need at the time (60's/70's).

24 bits is a lot of addresses, even though whole blocks are reserved for specific uses.

PCs were not around at the time, and private ownership of computers was also in the future.

[ColdWater]

PCs were not around at the time, and private ownership of computers was also in the future.

I had a personal computer in the 70's.

[FreedomPoster]

Lots of large companies and universities have Class A addresses. It’s not a very good use of space.